Crane-trolley.



E.H.KENDALL CRANE TROLLEY.

APPLICATION FILED NOV. I6. i912.

Patented July 27, 1915.

2 SHEETS-SHEET l.

E. H. KENDALL. A

CRANE TROLLEY.

APPLICATION FILED Nov.16. 19|2.

2 SHEETS-SHEET 2.

WBTNESSE@ INVENTOR Patented July 27, 1915.

A EDGB HOlllll'lR4 KENDALL, 0F WILKINSBURG, PENNSYLVANI, u# ANCE MACHINE COMPANY, F ALLIANCE, 01H10, CORPO cnn'rnnnr.

y- IUP i, y gyrjmgg' Specification of Letters Patent. Pwtmmtd July 2W, jlwjl, Application med November 16, 1912. Serial No. 731.31%.

T0 all whom it may concern."` trolley frame. Each drum has rigidly Selo, it known that l. Enom Homan KEN- cured thereto a large gear 9, these two gears naar., a resident of Wilkinsburg, in the intermeshing, as shown. ach of the gears County of Allegheny and State of lnnsyl- 9 is connected to a driving motor 10, through vania` have inventeda new and useful Ima train of gears 11, 12, 13, 14: and 15. A movement in Cra'ne-'l`rolleys, of which the 16 designates the usual magnetic brakes, following is a full, clear, and exact descripwhich are attached to the motors 10, for the tion, reference being had to the accompanypurpose of stopping the. revolution of the ing drawings, forming part of this speciimotor armatures when current iscut o ration. in which 17 is an electric motor mounted on the 65 Figure 1 is a plan view; Fig. 2 is a side trolley frame 2 and'desig'ned to movethe elevation of a crane trolley embodying my trolley along the girders 4, through the shaft invention; and Figs. 3 and 4 are plan views 18, and the gears-19 and 20. The gears 20 showing tvvo different modifications. f j are keyed on the shaft to which the track 5 My invention has relation to certain new Wheels 3.?118 Securedi 70 and useful improvements in crane trolleys, 21 designates the twov sets of hoisting and has been designed primarily for use on ropes, one set depending from each of the ladle cranes ofthe character described and drums 7. I

claimed in the patent to George W. Shem, 22 designates a liftingbeam carrying a 2o No. 791,951, of June (i, 1905, although it is pulley 23, at cach end portion. The ropes21 75 equally applicable to any construction where pass around these pulleys by which there is the hoist requires two sets of hoisting ropes an equal lifting action on each end of the which must be hoisted at the same speed. beam. ln the present instance, thebeam 22 Another form of crane to which the inven- 1S SllOWTl S provi ed With depending ladle 25 tion is applicable is, for instance, cranes for hooks 24, which engage the trunnions o a so lifting long bars or beams, in which two Sets ladle 25. As above stated, however, the liftof hoisting ropes are used in order to steady ing beam may be of any suitable character.

the load-by lifting it from two points in- The advantages of my invention will loe stead of one. apparent from the foregoing. The motors 3o My invention consists in anovel arrange- 10 are preferably serieswound motors, so e5 ment of the hoisting drums, in accordance that in case either motor burns out, the rewith which they are placed side by side, and maining motor will be suiciently powerful are each providedwith a gear rigidly seto lift or lower the load and prevent its cured thereto and the two gears meshing dropping. f any gear in either traino with each other. Each of the drums is gears connecting the drums with their reeo driven by an electric motor through a train spective motors should break, the load will of gearing. The arrangement is such that also be sustained through the intermeshing if any gear in a train of gears from the gears 9.

motor to the drum should break or if either l do not desire to limitmyself to the parmotor should fail, the other motor would ticular construction and arrangement o 95 sustain the, load and prevent it from dropparts as herein shown and describe but it ping. is obvious that they may loe varied in many Referring to the accompanying drawings, ways within the scope of my invention, as

in which l have shown one embodiment of defined in the appended claims. For 1nmy invention, the numeral 2 designates the stance, the arrangement of the gearing be- 100 trolley frame supported on thetrack wheels tween the motors and their drums may e 3, which run on the girders 4 of a traveling changed, the two drums may loe intergeare crane bridge. rlhis bridge may be, for exwith each other in a dierent manner, an ample, of a construction similar to that various other changes may be ma e. n 5o shown in Patent No. 791,951, above referred Fig. 3, for instance, l have shown the two 105 to. 5 designates an auxiliary trolley rundrums as being driven through the separated ning on girders (i, asin thesaid patent. gears 26 at one end and intergeared at t e The numeral 7 designates the two hoisting o posite end through the intermeshing gears drums which are placed side by side, being 2 ln Fig. Ll have own an arrangeet journaled 1n suitable bearings t, on the' ent aimilar that of i. l., but m which ttt the respective driving pinions 28 mesh with frame with two lifting drums arranged side the gears 29 at kopposite ends of the two by side and directly and permanently interdrums. Itfwill be noted that in this figure, geared with each other, and two actuating 30 as in Figs. l and 3, the drums, intermediate motors each geared to one of the drums, each 5 shafts, gearing, bearing brackets, etc., are all of said motors and its gears being of suiinterchangeable from one side to the other. cient power to resist dropping of the maxihat is to say, therel are no right and left mum load if the other motor or its connecparts. It will further be observed that the tions become inoperative; substantially as 3 drums can be operated with either one or described.

10 two, motors, without changing the distance 2. A single crane-trolley having a single between the centers of the two drums. The rigid frame with two lifting drums arranged motor or motors are located away from the side by side intermediate of its length and heat and` in the most accessible position. directly and permanently intel-geared one 4o ple -room is provided for.the application with the other, two drum actuating motors 15 o either mechanical or electric brakes or located at opposite end portions of the trolcient power to control and sustain the load. each of said motors and its gears being of he gearingis a large factor of safety, accisufficient power to resist dropping of the dents from breakage of any of the parts up maximum load if the other motor or its con- 20 to the hoisting cables being eliminated. The nections become inoperative; substantially drums being geared together, the thrust beas described. tween the drum pinion and drum gear tends In testimony whereof, I have hereunto set to separate these gears, but this separation is my hand.

neutralized by having'the two drums geared l EDGAR HOMER KENDALL- ,25 together. Witnesses: i

I claim: c GEORGE H.` PANNEKER,

1. A single crane-trolley having av rigid H. M. CORWIN. 

